Correct Answer: D

Rationale: The correct answer is D: "I will have my potassium level checked." Furosemide is a loop diuretic that can cause potassium loss, leading to hypokalemia. Monitoring potassium levels is crucial to prevent complications such as cardiac arrhythmias. A: Monitoring urine sodium is not typically necessary for furosemide therapy. B: Prothrombin time monitoring is unrelated to furosemide therapy. C: Monitoring calcium levels is not directly affected by furosemide use. In summary, monitoring potassium levels is essential due to the potential for hypokalemia with furosemide, while the other options are not directly relevant to this medication.

Correct Answer: D

Rationale: The correct answer is D, "All of the above." Malignant melanoma, basal cell epithelioma, and squamous cell carcinoma are all types of skin cancer associated with prolonged sun exposure. Melanoma is the most dangerous form, while basal cell and squamous cell carcinomas are more common but less aggressive. Sun exposure can lead to DNA damage in skin cells, increasing the risk of developing these types of cancers. Therefore, all three choices are correct as they are all linked to sun exposure. The other choices are incorrect because each type of skin cancer mentioned can be caused by prolonged sun exposure, so selecting any one of them individually would not fully capture the scope of the risks associated with sun exposure.

Correct Answer: C

Rationale: The correct answer is C because mastitis typically presents with swollen, firm, and hard breasts due to inflammation and infection of the breast tissue. This occurs as a result of milk stasis and bacterial infection. Option A is incorrect because a crack in the nipple or areola can be indicative of nipple trauma or infection, not necessarily mastitis. Option B is incorrect because multiple lumps within the breast tissue may suggest fibrocystic changes or breast cancer, but not specifically mastitis. Option D is incorrect because enlargement of the axillary lymph nodes is more commonly seen in breast cancer, not mastitis.

Correct Answer: C

Rationale: The nurse would identify platelets at 115,000/ul as an abnormal finding because it is below the normal range of 150,000-450,000/ul. Low platelet count can lead to increased bleeding risk. RBC count and hematocrit levels are within normal ranges, making them normal findings. Option D is incorrect as platelets are abnormal.

Correct Answer: D

Rationale: The correct answer is D: Subclavian veins. Lymph returns to the blood through the subclavian veins because they receive lymphatic drainage from the thoracic duct and right lymphatic duct. Lymphatic vessels merge into lymphatic ducts, which empty into the subclavian veins, allowing lymph to re-enter the bloodstream. The carotid arteries (A) carry oxygen-rich blood to the brain, the aorta (C) is the main artery of the body carrying oxygenated blood from the heart, and the inferior vena cava (B) returns deoxygenated blood from the lower body to the heart. Therefore, choices A, B, and C are incorrect as they are not involved in the return of lymph to the blood.